.er {
    position: relative;
    border: 1px solid #ccc;
    outline: none;
    overflow: auto;
}

.er canvas {
    position: absolute;
}

.er-table {
    position: absolute;
    border: 1px solid #ccc;
    height: 200px;
    width: 200px;
    background: #fff;
    user-select: none;
}

.er-table-body {
    height: calc(100% - 30px);
    overflow: auto;
}

.er-table-header {
    background: #1890ff;
    cursor: move;
    color: #fff;
    padding: 8px 16px;
}

.er-table.er-table-selected .er-table-header{
    opacity: .8;
}

.er-table-field {
    border-top: 1px solid #ccc;
    padding: 4px 16px;
}


